彭以超,张麦仓,肖将楚,董建新,杜晨阳

• 1:北京科技大学材料科学与工程学院
• 2:中国特种设备检测研究院

摘要(Abstract)：

以Cr35Ni45Nb合金钢为对象进行一系列高温蠕变持久试验,并采用SEM、EDS等对试样外表面、横截面及断口进行了观察分析。结果表明,蠕变过程中Cr35Ni45Nb的氧化腐蚀对持久寿命的影响较大,它主要取决于表面氧化膜破裂-自修复和内氧化两种行为的耦合过程;当氧化膜失去保护作用后,严重的内氧化过程将逐渐向心部扩展,使得晶界强度急剧弱化,材料的有效承载面积减小,从而加速材料的蠕变进程。另外,高温应力环境下Cr35Ni45Nb钢中会同时发生一次碳化物聚合粗化、析出相粒子数目减少、内氧化等化学损伤,以及蠕变空洞的形核长大甚至裂纹的形成等机械应力损伤,这两种损伤相互促进,导致炉管材料组织及力学性能弱化,持久寿命降低,Larson-Miller参数法外推的持久寿命发生一定程度的偏离。

关键词(KeyWords)： Cr35Ni45;内氧化;蠕变;持久寿命

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划(“863”计划)(2012AA03A513)

作者(Author): 彭以超,张麦仓,肖将楚,董建新,杜晨阳

DOI: 10.13289/j.issn.1009-6264.2014.08.018

参考文献(References)：

• [1]Khodamorad S H,Haghshenas Fatmehsari D,Rezaie H,et al.Analysis of ethylene cracking furnace tubes[J].Engineering Failure Analysis,2012,21:1-8.
• [2]Mitchell D,Young D J,Kleemann W.Caburisation of heat-resistant steels[J].Materials and Corrosion,1998,49(4):231-236.
• [3]Kaya A A,Krauklis P,Young D J.Microstructure of HK40 alloy after high temperature service in oxidizing/carburizing environment[J].Materials Characterization,2002,49(1):11-34.
• [4]Zhu Z,Cheng C,Zhao J,et al.High temperature corrosion and microstructure deterioration of KHR35H radiant tubes in continuous annealing furnace[J].Engineering Failure Analysis,2012,21:59-66.
• [5]Petkovic-Luton R,Ramanarayanan T A.Mixed-oxidant attack of high-temperature alloys in carbon-and oxygen-containing environments[J].Oxidation of Metals,1990,34(5-6):381-400.
• [6]李铁藩.金属高温氧化和热腐蚀[M].北京:化学工业出版社,2003.
• [7]Tempest P A,Wild R K.Oxidation pretreatment to reduce corrosion of20%Cr-25%Ni-Nb stainless steel[J].Oxidation of Metals,1988,30(3-4):209-254.
• [8]周长海,马海涛,王来.外加应力下合金高温氧化膜的生长及其失效愈合研究现状[J].腐蚀科学与防护技术,2010,22(6):558-562.ZHOU Chang-hai,MA Hai-tao,WANG Lai.A review on oxide-scale growth,failure and its healing behavior during high temperature oxidation of alloys[J].Corrosion Science and Protection Technology,2010,22(6):558-562.
• [9]钱余海,李美栓,张亚明.力学载荷作用下合金的高温氧化行为研究状况[J].腐蚀科学与防护技术,2001,13(6):342-346.QIAN Yu-hai,LI Mei-shuan,ZHANG Ya-ming.A review on high temperature oxidation of alloys under mechanical loading[J].Corrosion Science and Protection Technology,2001,13(6):342-346.
• [10]Young D J.High temperature oxidation and corrosion of metals[M].Access Online via Elsevier,2008.
• [11]Ling S,Ramanarayanan T A,Petkovic-Luton R.Computational modeling of mixed oxidation-carburization processes:Part 1[J].Oxidation of Metals,1993,40(1-2):179-196.
• [12]李美栓.金属的高温腐蚀[M].北京:冶金工业出版社,2001.
• [13]张俊善.材料的高温变形与断裂[M].北京:科学出版社,2007.
• [14]Robertson J,Manning M I.Limits to adherence of oxide scales[J].Materials Science and Technology,1990,6(1):81-92.
• [15]钱余海,李美栓.氧化膜开裂和剥落行为[J].腐蚀科学与防护技术,2003,15(2):90-93.QIAN Yu-hai,LI Mei-shuan.Cracking and spalling behavior of thin oxide scale[J].Corrosion Science and Protection Technology,2003,15(2):90-93.
• [16]靳惠明,Felix A,Aroyave M.离子注钇对镍900℃高温氧化行为及氧化膜性能的影响研究[J].物理学报,2006,55(11):6157-6162.JIN Hui-ming,Felix A,Aroyave M.Influence of yttrium ion-implantation on oxidation behavior of nickel and property of oxide scale at 900℃[J].Acta Physics Sinica,2006,55(11):6157-6162.
• [17]辛丽,李铁藩.离子注入Y+对Ni30Cr定向凝固合金氧化膜界面缺陷与剥落机制的影响[J].金属学报,1997,33(8):851-862.XIN Li,LI Tie-fan.Influence of Y+-implanation on interfacial defects and spalling mechanism of Cr2O3scale formed on Ni30Cr directional solidification alloy[J].Acta Metallurgica Sinica,1997,33(8):851-862.
• [18]Riedel H.Fracture at High Temperatures[M].Berlin:Springer-Verlag,1987.
• [19]林明通,蒋丹宇.空洞蠕变的理论模型[J].硅酸盐通报,2001,20(5):16-21.LIN Ming-tong,JIANG Dan-yu.Theoretical models for cavitation creep[J].Bulletin of the Chinese Ceramic Society,2001,20(5):16-21.

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